I had connection problems last night, so I went to
www.gnufrog.com to find some good ones.
I found a good host 64.172.24.179 I added it to my preferred host list. It's a bit hit and miss, but it seems to kick-start the connections. I managed to get 1,400 hosts and this morning it's still a great connection.
This is at the moment 11:20am in UK, It will change, so use Gnufrog for info...
Good Luck